package com.yuer.MusicPlayer.lrc;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;

public abstract class ZLibUtils
{  //用于酷狗歌词
    public static byte[] compress(byte[] data) {
        byte[] output = new byte[0];
        Deflater compresser = new Deflater();
        compresser.reset();
        compresser.setInput(data);
        compresser.finish();
        ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);
        try {
        byte[] buf = new byte[1024];
        while (!compresser.finished()) {
        	int i = compresser.deflate(buf);
        	bos.write(buf, 0, i);
        }
        output = bos.toByteArray();
        } catch (Exception e) {
        	output = data;
        	e.printStackTrace();
        } finally {
        try {
        	bos.close();
        } catch (IOException e) {
        	e.printStackTrace();
        }
        }
        compresser.end();
        return output;
    }
      
    public static void compress(byte[] data, OutputStream os) {
        DeflaterOutputStream dos = new DeflaterOutputStream(os);
        try {
        dos.write(data, 0, data.length);
        dos.finish();
        dos.flush();
        } catch (IOException e) {
        	e.printStackTrace();
        }
    }
      
    public static byte[] decompress(byte[] data) {
        byte[] output = new byte[0];
        Inflater decompresser = new Inflater();
        decompresser.reset();
        decompresser.setInput(data);
        ByteArrayOutputStream o = new ByteArrayOutputStream(data.length);
        try {
        byte[] buf = new byte[1024];
        while (!decompresser.finished()) {
        int i = decompresser.inflate(buf);
        o.write(buf, 0, i);
        }
        output = o.toByteArray();
        } catch (Exception e) {
        output = data;
        e.printStackTrace();
        } finally {
        try {
        o.close();
        } catch (IOException e) {
        e.printStackTrace();
        }
        }
        decompresser.end();
        return output;
    }
          
    public static byte[] decompress(InputStream is) {
        InflaterInputStream iis = new InflaterInputStream(is);
        ByteArrayOutputStream o = new ByteArrayOutputStream(1024);
        try {
        int i = 1024;
        byte[] buf = new byte[i];
        while ((i = iis.read(buf, 0, i)) > 0) {
        o.write(buf, 0, i);
        }
        } catch (IOException e) {
        e.printStackTrace();
        }
        return o.toByteArray();
    }
}